5 Best Red Dot For FNX 45 Tactical

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Hey Shooters! Welcome to the review of Best Red Dot For FNX 45 Tactical in 2023.

I have been using an FNX 45 Tactical as my primary carry handgun for a long time, so I decided to put together a list of the Best fnx 45 red dot based on my own experience and research.

I have used many red dot sights on my FNX 45 Tactical as an avid shooter. But Trijicon RMR Type 2 Red Dot Sight is the one that I always come back to. It’s rugged and reliable, perfect for a gun like the FNX 45 Tactical.

Top 3 Best Red Dot For FNX 45 Tactical

Let’s get into the list of 5 Best for FNX 45 Tactical red dot sights without delay.

Best Red Dot For FNX 45 TacticalBest ForPrice
 Trijicon RMRBest All Around$499
HOLOSUN HS507C X2Budget Alternative of Trijicon$309
Leupold DeltaPoint ProDurability$449
Trijicon SROLarge Field of View$529
Vortex VenomValue For Money$249

Top 5 Best FNX 45 Tactical Red Dot

The FNX 45 Tactical is a beast of a handgun, and it deserves a top-quality red dot sight. Here are my five favorite red dot sights for the fnx tac 45 based on performance, durability, and value for money.

1. Trijicon RMR Type 2 – Best in all Aspects

Trijicon RM06-C-700672 RMR Type 2 Adjustable LED Sight, 3.25 MOA Red Dot Reticle, Black
  • 3.25 MOA ADJUSTABLE LED RMR: Features an automatic...
  • UNIQUE PATENTED HOUSING SHAPE: Military-grade aluminum...
  • BATTERY CONSERVATION MODE: Automatically adjusts aiming...
  • BUTTON LOCKOUT: Sets RMR into automatic mode to prevent...

Trijicon is a well-known name in the optics world, and their RMR Type 2 red dot sight is my top choice for the fnx 45 tactical because when I tested it side by side with other fnx 45 red dot, the Trijicon outperforms them all in every way.

Why It’s On Top – Trijicon’s RMR is a precision sight that can be used for any shooting situation and has been proven repeatedly. The pinpoint accuracy and durability have made it one of the most sought-after red dot sights among shooters, especially those who love shooting handguns or rifles alike.

Suitable for astigmatism – This 3.5 MOA dot features an automatic brightness mode that adjusts the dot intensity to match the surrounding environment, making it easier for shooters with astigmatism.

Long battery life: One of the best features of this fnx 45 red dot is its long battery life. Even when left on continuously, it lasts up to 4 years.

Built like a tank: With its military-grade aluminum alloy forged housing, this frame is designed to reduce the impact force on your lens. This means that it will be durable and last longer than any red dot sight in this list.

My Experience

I have used Trijicon RMR red dot sight for over a year on my fnx tac 45 and it has never let me down. The clarity is superb, the battery life is incredible, and it just works every time without fail.

The only drawback I feel is the need to remove and reinstall the red dot sight when changing batteries, but that is a small price to pay for such an amazing product.


  • It is Extremely tough and highly durable
  • Adjustable Windage and elevation
  • Extremely bright red dot perfect for target acquisition
  • Comes with Picatinny rail mount
  • Waterproof up to 20 meters


  • need to remove the sight to change the battery.

2. HOLOSUN HS507C X2 – Best Alternative of Trijicon

HOLOSUN HS507C-X2 Classic Multi Reticle Red Dot Sight, Black
  • INCLUDES: Holosun HS507C-X2 Red Dot Sight | Coin...
  • LONG BATTERY LIFE: Features include Holosun’s Super...
  • ADVANCED TECHNOLOGY: There are 12 different brightness...
  • SHAKE AWAKE: Holosun’s Shake Awake Technology shuts...
  • Holosun optics with Solar Failsafe feature automatic...

The HOLOSUN HS507C X is a great alternative to the Trijicon RMR and offers many of the same features at a fraction of the price.

Why It’s On Top – The first thing you will notice about this red dot sight is its unique circular field of view. This allows for a wider field of view and makes it easier to find your target.

Multiple reticle options: This red dot sight comes with three reticle options, a 2 MOA dot, a 32 MOA circle, or a combination of both. This allows you to choose the reticle that best suits your needs.

Solar power: One of the best features of this red dot sight is that it is solar-powered, meaning you will never have to worry about battery life.

Shake awake technology: This feature automatically turns on the red dot sight when it is moved and turns off the sight when it is inactive for some time. The shake awake feature significantly extends the battery life.

Side battery access: I love holosun products because they always think about the user experience, and this red dot sight is no different. It features side battery access, making it easy to change batteries without removing the sight.

See My full detailed Holosun 507c Review.

My Experience

I saw many people on the internet saying they were unhappy with their purchase of the HOLOSUN HS507C X because it did not hold up to the same standards as the Trijicon RMR. But I have found that this is not true, and this red dot sight is as good as the RMR.

The only drawback I have found is that it is not as durable as the RMR, but it is still a best red dot for FN 509 Tactical and FNX 45 Tactical.


  • Exceptional long battery life
  • Its lock mode prevent from accidental presses
  • User-friendly features
  • Solar Failsafe technology
  • High capacity lithium ion battery
  • Multi coated lens that allows maximum light transmission
  • Great value for money
  • Compact and elegant design


  • Too dim in daylight
  • No way to adjust brightness levels

3. Leupold DeltaPoint Pro – Best Optic for FN FNX 45 Tactical

Leupold DeltaPoint Pro Red Dot Sight, 2.5 MOA Dot - Matte finish
  • Model #119688 - DeltaPoint Pro Red Dot Sight, 2.5 MOA...
  • Leupold’s Professional-Grade Red Dot Optical System...
  • This scopes comes with an illuminated reticle, which...
  • Motion Sensor Technology (MST) extends battery life by...
  • Design, Machined and Assembled in the USA. 100%...

Leupold is one of the most trusted names in optics, and their DeltaPoint Pro Reflex Sight is one of the best red dot sights on the market. I only put this at number three because it requires modification or an aftermarket plate to fit the FNX 45 Tactical.

Why I love Leupold delta pro – I love the Leupold delta pro for its crystal clear glass and rugged construction. It is also one of the lightest red dot sights on this list, weighing only 0.12 pounds.

Tool-less windage and elevation adjustments: This feature allows you to make quick and easy adjustments without needing any tools.

Top-mounted battery: The top-mounted battery is another great feature of this red dot sight. This means that you will not have to remove the sight to change batteries, and it also helps to extend the battery life.

Lens hood protection: The lens hood protects the red dot sight from the elements and helps to reduce glare. It prevents damage to the optic and keeps it from getting dirty.

My Experience

It is one of the best red dot for fnx 45 I have ever used, and I would not hesitate to recommend it to anyone.

The only drawback I have found is that it does not come with an aftermarket plate.(Leupold DeltaPoint Pro Dovetail One-Piece), so you will need to buy one or modify the fnx tac 45.

I saw people debate about trijicon vs leupold. well it all depend on personal preference.


  • Bright glass offers crystal clear view
  • Motion detection feature is helpful for close quarter encounters
  • Perform excellent in low light conditions
  • No slide modification required to fit on fnx 45 tactical
  • Rugged waterproof construction
  • Easy-access battery compartment


  • Single button operation
  • it is much thicker 

4. Trijicon SRO – Best Large FOV Red Dot

Trijicon SRO Sight Adjustable LED 2.5 MOA Red Dot, Black
  • LARGE, UNOBSTRUCTIVE FIELD OF VIEW: Parallax-free and...
  • CLEAR, CRISP DOT: Fine-tuned, illuminated reticle,...
  • RED DOT PISTOL READY: Designed to fit on many of the...
  • SAME FOOTPRINT AS RMR: Mounts easily using the same...

If you are looking for a red dot sight with a large field of view, then the Trijicon SRO is the best option. This sight was designed for competition shooting and offered an impressive field of view.

Why I love SRO – Sro is the only red dot sight on this list that offers a large unobstructed field of view with the compatibility of suppressor height iron sights. The SRO has a window size of 20mm, which is near twice the size of the other red dot sights on this list.

Adjustable LED: This feature allows you to adjust the brightness of the red dot to match your environment.

Best follow-up shots: The SRO is designed for quick target acquisition and follow-up shots. With an enlarged window frame, you can acquire the red dot in the center of your lens quickly and easily with less time spent looking for it or getting lost during follow-up shots.

Same Footprint As RMR: The best part is you don’t have to change any mounts or anything because the SRO has the same footprint as the Trijicon RMR. So if you already have an RMR, you can just swap out the optic and not worry about buying new mounting options.

My Experience

I have found that this red dot sight is the best for competition shooting and general plinking. The only drawback is that it is not as durable as some of the other red dot sights on this list.


  • Offers a bigger window and top loading battery.
  • Three reticle options
  • Three years long battery Life
  • Adjustment Range of 150 MOA
  • No color fading
  • Best for concealed carry & Competition Shooting


  • Expensive
  • Perceived robustness

5. Vortex Venom – Best Value for Money

Vortex Optics Venom Red Dot Sight - 3 MOA Dot,Black
  • The Venom Red Dot Sight-3 MOA promotes rapid target...
  • High quality, fully multi-coated lenses offer a clean,...
  • The Venom also has an auto-brightness mode that uses an...
  • 1 MOA wind age and elevation adjustments are super...
  • The Venom Red Dot will fit well on your rifle or...

People who follow me mostly ask why I always put vortex venom on my list. And I always say the same thing because it’s simply the best bang for the buck. It has all the features you need in a red dot sight and doesn’t break the bank.

Why I love Vortex Venom – I love the Vortex Venom for its affordability and feature-rich design. For a budget-friendly red dot sight, it offers a lot of features that are usually only found on more expensive models.

Rapid target acquisition – vortex offers two reticles to choose from, and both 3 and 6 moa options offer rapid target acquisition and pinpoint accuracy.

Multiple brightness settings: This red dot sight has 11 different brightness settings, so you can always find the perfect brightness for your environment.

Parallax-free: This red dot sight is parallax-free, which means that the dot will always be in the same place, regardless of where your eye is in relation to the sight.

Auto brightness mode: This feature automatically adjusts the brightness of the red dot to match your environment, which is a great feature for those who don’t want to fiddle with the brightness settings.

My Experience

I have found that this red dot sight is the best for competition shooting and general plinking. The only drawback I have found is that it is not as durable as some of the other red dot sights on this list.

Don’t Get confuse between vortex venom vs vortex viper.


  • Extremely compact & Lightweight
  • You Can choose between 3 MOA and 6 MOA
  • Sharp, crispy and bright dot
  • Automatic brightness adjustment settings
  • Batteries can be changed without removing the sight
  • Backed by superb lifetime warranty from Vortex


  • Battery compartment is hard to access if you have big hands
  • CR1632 batteries IS Difficult to find.

Final Verdict

At the end of the day, the best red dot sight for FNX 45 Tactical is the one that meets your specific needs and preferences. There is no one-size-fits-all answer, so take your time to find the perfect sight for your handgun. With a little bit of research, you’ll be able to find the perfect fn fnx 45 tactical red dot.

If you want the best possible option, go with the Trijicon RMR. It is the most expensive option on this list but also the most durable and reliable sight.

If you want a budget-friendly option, you can go with the Vortex Venom & holosun 507c. It is a great value for the money and offers all the features you need in a red dot sight.


Does FNX 45 Tactical come with a sight mounting kit?

Yes, the fnx tac 45 comes with a sight mounting kit with an adapter plate and two screws compatible with Trijicon RMR & SRO and Holosun Hs507c.

Which Optic Plate Fits The Leupold DeltaPoint Pro?

You can easily mount Leupold delta pro using Leupold DeltaPoint Pro Dovetail One-Piece.

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I'm Micheal, an avid shooter and hunting enthusiast from Texas. I'm a recreational shooter who loves to spend time at the range and enjoy learning about new firearms and gears. I love to write about guns and share my passion for shooting with others.

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